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Lazareth LM847 packs a Maserati V8 into a leaning quad frame

You want to know what insanity looks like? This is it. It's called the Lazareth LM847, and to boil it down to its essence, it's basically a sport bike built around a Maserati V8. Now this isn't the first motorcycle we've seen packing a giant car engine. There've been more custom jobs than we could list here, and of course there's the Boss Hoss – an American cruiser with a 5.7-liter Chevy V8 at its heart. And we'd be loathe to leave out the V10-powered Tomahawk concept from this discussion. But this is another matter entirely. The LM847 is made by a French outfit called Lazareth. It's the same company responsible for the Wazuma quad bike, the Wazuma GT roadster, and that bonkers Renault Twingo with the Range Rover V8 in the back. In other words, Lazareth knows crazy, and hasn't skimped on it this time. For its latest project, Lazareth started with a 4.7-liter V8 – the kind you used to find the Quattroporte or Alfa Romeo 8C Competizione before Maserati started downsizing and bolting on turbos. It produces 470 horsepower and 457 pound-feet of torque, channeled through a single-speed hydraulic coupling in place of a multi-gear transmission. Strictly speaking, it's not a motorcycle, but a quad – owing to the tandem wheels at each end. But it has a saddle and handlebars, and looks like it would lean in a fair bit in the turns. We're not about to find out though, because we don't have a death wish. Related Video:

Step inside the secret lab creating Maserati's future

MODENA, Italy – Driving Maserati's raucous GranTurismo MC and the effortlessly quick Levante SQ4 back to back feels like traveling through time. Horsepower doesn't go out of style, but a user interface quickly does, and the GranTurismo looks like it's from another era in that respect. Designers, engineers, and executives are busily orchestrating a transformation that will ensure the 105-year old firm's next leap forward is even more dramatic. Autoblog went behind the scenes in Maserati's Innovation Lab – which has never been opened to outsiders before – to find out how the looming metamorphosis will shape Fiat-Chrysler Automobiles' (FCA) flagship brand. Maserati is on the brink of a ground-up redesign that will take it into new segments of the market, and diversify its powertrain palette. We heard the term electrification used on many occasions during our visit, though company officials resorted to automotive omerta when we asked for additional details. An earlier product plan reveals every upcoming addition to its line-up will be available with an electric powertrain, and there will be quite a few cars to electrify. Historically a small, almost niche automaker, Maserati is on track to release five new models between 2020 and 2023, including a second SUV positioned below the aforementioned Levante, plus replacements for most of its current cars. Technology is playing a significant role in Maserati's renaissance. The company's four-year-old Innovation Lab is home to simulators capable of reproducing six months' worth of wear and tear in two weeks. Engineers can dial in a variety of situations, locations, and road conditions, ranging from a winding country road in France to a busy highway in southern California. They can digitally insert potholes, add rain or fog at the push of a button and remove either just as quickly, and put virtual prototypes on a long list of race tracks around the world, including the Nurburgring. Digital wind tunnels help the team test future cars well before they're built. This approach saves time and money, explained Luca Dusini, the man responsible for Maserati's vehicle dynamics testing and simulation. Making every dollar and each minute count is key to pulling off such an ambitious overhaul. 90% of development work is carried out on the various simulators, according to Dusini. This is significant, because Maserati is developing most of the technology it will pack into its future models from scratch.

2019 BMW M850i xDrive: How it compares on paper with other GT coupes

Although the hot new vehicles for the rich seem to mainly comprise SUVs and supercars, the neglected luxury GT coupe segment is starting to see some life again. The latest to add a spark to this set is the 2019 BMW M850i xDrive. It goes on sale later this year, and revives the 8 Series that's been dead since the 1990s. The first version available to Americans will be one with a twin-turbo 4.4-liter V8, with other versions likely following. Before it launches, we wanted to get a lay of the grand-touring land and see how the new BMW stacks up to the competition in performance, practicality and price. While some of these models have higher-performance or more-affordable iterations, we picked the versions that would be the closest match to this 8 Series model. They include the 2019 Lexus LC 500, 2018 Mercedes-Benz SL 550, 2018 Mercedes-Benz S 560 Coupe and the 2018 Maserati GranTurismo. We will also provide some short summaries on our experiences with these cars, but to get a full picture of each model, be sure to check out their full reviews. And if you want to compare any of these cars with models you don't see here, be sure to try out our car comparison tool. Engines, transmissions and performance On paper, the BMW M850i xDrive is clearly the performer of the group. It has the most power and torque at 523 horsepower and 553 pound-feet. Coupled with all-wheel-drive and an eight-speed automatic, the car is able to overcome its relatively portly 4,478-pound curb weight to hit 60 mph in a scant 3.6 seconds. That's more than half a second quicker than the lightest car in the group, the Mercedes-Benz SL550, which weighs 4,012 pounds. The other three vehicles are in the low- to mid-4-second range to 60 mph. Though the Maserati is the slowest to 60 mph, it does boast the highest top speed of 186 mph. The M850i and SL 550 are electronically limited to 155 mph, while the Lexus is limited to 168 mph. The Mercedes S 560 has the lowest top speed at an electronically limited 130 mph. View 52 Photos Of interest is that there's a 50/50 split among these cars between using a pair of turbos, and having none at all. The BMW and Mercedes resort to forced induction, whereas the Lexus and Maserati choose to stay naturally aspirated. This is likely why the Germans break 500 pound-feet of torque, while the others don't make it to 400. Also interesting is the spread of gear quantity. The Maserati has just six ratios to choose from, and the Lexus has a whopping 10.