Why not just use an old rug in conjunction with a concrete stop(bricks ??) and a large drip pan..
I have doubts if anyone has thought of manufacturing these items as a package yet specifically for this purpose..
Maybe next year...and, of course, made in China....

Unless the Behr stuff is garbage, I really wouldn't worry about it. You just need to change your parking habits. I have an Epoxy floor sealed with 4 coats of 2part Urethane and alls I do is leave the car outside for about 20min and let the tires cool down. I only do this when I have been driving the car for more then an hour. Most of the time the tires are never very hot after short 20min trips, so I just park it in the garage. On the other hand my DW, who often ignores my "hot-tire" rule, has driven on it with hot tires several times and it has had no effect so far. My floor is 5 months old and still looks as good as the day it was installed.

As for stuff dropping on it, I have found nothing that sticks. Water is probably the worst thing that gets on it, since you can't see it and it makes the floor slippery. I was told the only thing that can eat it is brake fluid that is left on it for more then 48 hours. I was also told by my installer that they can fix it if an area goes bad. I really wouldn't worry about it.