Thanks.
This is their Diamond tile, which are one foot square with a Diamond tread pattern. They also have 18" square XL tiles. All the details are at their site:
http://www.racedeck.com. They're super strong plastic 1/2 inch thick interlocking tiles. They just snap together and float... no glue.
I got them straight from RaceDeck. They offer discounts for certain club members (not sure which clubs other than garagejournal.com members) and quantity discounts as well. Recommend checking out
http://www.garagejournal.com in the flooring section.
I got over 1000sf and it ran me about $3 per/sf delivered. Not cheap, but at least you can lift it up and take it with you if you move.
You can save about 25% and get a similar product from Costco called MotoFloor, also manufactured by Snaplock Inc, makers of RaceDeck. MotoFloor is on sale now until 3 Aug on the Costco website. It's a less beefy tile with more limited color choices, but plenty adequate for most residential applications. They're also Made in USA, so that's a plus as well.
Hmmm, I sound like a salesman... just a satisfied customer I guess.