Word on the street had it that Tesla's $50 million deal with Toyota wasn't formal back in late May, but evidently things have made positive progress since. According to a new (though admittedly brief) report over at CNN, Toyota is currently working with the electric automaker on a pair of prototype vehicles. As the story goes, Tesla will be delivering two prototypes to Toyota "by the end of the month," with the vehicles using "Tesla's electric motors and battery packs and the bodies of Toyota vehicles." Tesla Chief Technology Officer JB Straubel has been quoted as saying that the two outfits have "made a lot of progress in a short amount of time," and we couldn't be more excited to see what kind of results will come from this tie-up. We can't help but hope that those regenerative brakes do a bit more than regenerate, though. Sorry, we had to. Really.