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We go Unplugged to celebrate Mazda Miata Month

Chances are good that you, loyal Autoblog reader, have long since chosen to follow us on Twitter and 'like' us on Facebook. (If you haven't, feel free to take a second and do so right now.) Anyway, if you're one of our social media posse, you might have already heard that we're smack dab in the middle of Miata Month. We've gotten Mazda to loan us a couple of MX-5 Miatas, allowing us to say a protracted, tear-filled goodbye to the current generation (NC) of the beloved roadster, just before it exits stage right and ushers in the next generation.
You'll see a few more Miata Month items here on Autoblog after we've said our final farewell, but we absolutely wanted to make sure we created some great video evidence of our month, as well. Right down below, then, in its unfiltered-audio splendor, is the Autoblog Unplugged version of the 2015 Mazda MX-5 Miata PRHT. Your author had a pretty great time wringing out the roadster for the creation of our short vid, and we really hope you dig listening along.

Mazda working on lithium-ion batteries to replace lead-acid starter batteries

In the quest for ever better fuel economy, car companies are looking for every single advantage possible, no matter how small. This is evident in everything from active grille shutters to the 48-volt mild-hybrid electric assist systems like that in the new Ram 1500. For Mazda, the latest target for potential efficiency gains is the lowly 12-volt starter battery. The company announced that it is partnering with two other companies, ELIIY Power and Ube Industries, to develop a lithium-ion starter battery that would be used on mainstream models in place of conventional lead-acid units. Mazda plans to have them ready for use by 2021. The advantage here would be that 12-volt lithium-ion batteries would be much smaller and lighter than the lead-acid ones they replace. And lighter cars don't need as much fuel to move around. Plus, as an added benefit, making cars lighter also often makes them faster and better handling. This is why companies such as Lotus and Porsche have offered optional lithium-ion 12-volt batteries for some lightweight sports cars. A potential downside to the use of these batteries is increased cost. Lead-acid batteries from your local parts store will run you between $100 to $150. AGM batteries could be between $200 and $300. As for lithium-ion batteries, Lotus introduced the option on the Evora 400 in 2016, and the option cost $1,690. Odds are that a company such as Mazda won't be absorbing all those costs, meaning that the cost of these future Mazdas could increase with a change from lead-acid to lithium ion. Related Video:

Mazda CX-5 Luggage Test | How much cargo space?

We're already seen how Mazda's largest crossover, the CX-9, does at stuffing luggage inside its cargo hold. Now it's time for the next rung down the Mazda ladder. The Mazda CX-5 has 30.9 cubic-feet of space behind its raised back seat, which on paper, is considerably less than its top competition. The Hyundai Tucson leads the way with 38.7 cubic-feet, the Honda CR-V (39.2) and Toyota RAV4 (37.5) are basically the same, and the Subaru Forester has between 33 and 35 depending on options. However, the CX-5 does have more than the Chevrolet Equinox (29.9), Jeep Compass (27.2) and Ford Escape when its sliding back seat is in its aft-most position (33.5 when all the way forward).  Basically, this compact Mazda's cargo area is midpack, which makes it a good choice for my first luggage test of the segment. Let's see how much of the luggage in my garage fits inside. As a refresher, I use two mid-size roller suitcases that would need to be checked in at the airport (26 inches long, 16 wide, 11 deep), two roll-aboard suitcases that just barely fit in the overhead (24L x 15W x 10D), and one smaller roll-aboard that fits easily (23L x 15W x 10D). I also include my wife's fancy overnight bag just to spruce things up a bit (21L x 12W x 12D).  I started by keeping the cargo cover in place to see how much fits underneath it. The answer is the four largest bags. The two smaller ones did not. OK, now let's remove the cargo cover, which is an unusual design. Rather than a roller-type cartridge that you manually pull into place or a rigid hatchback-like unit that rises up when the liftgate goes up, the CX-5 basically combines the two. The forward bit is attached to the liftgate and unspools when opened.  To detach it, you need to unfasten these plastic clamps and then remove the cartridge reel much as you would a normal cargo cover. OK, and now here's how much the CX-5 can fit with the cargo cover removed.  All of it! That above configuration is just the first thing I came up with, but there's likely additional Tetris formations to be found. Note that the tailgate does close here but the middle cases' wheels are awfully close to the window.  I'm not going to stop there, though. I went ahead and rummaged through my garage to see what it would take to fill'er up. There you go: one duffle bag and one gym bag stuffed into the spaces. You could probably fit a grocery bag right in front there, too.