Well Bob, you thought that out well with the electric start--good move!! I investigated the RaceDeck/Tuff Deck stuff and what discouraged me most was their answer to the following question:

Q. By design I assume water could get underneath the tiles, correct?
A. Yes
Q. Did you design in a method then for the water to evaporate from underneath the tiles so as not to cause mildew/mold, etc?
A. No....but...shouldn't be a problem.

Q. What happens when you drive on it with stones embedded om the tread, will it scratch?
A. Yes, it could, but it would be easy to replace the affected tiles.

I went two part epoxy with silica beads for adhesion. Love it.