RaceDeck floor tiles are available through dealers throughout the county...These are easy to use "DIY" floor system that virtually requires no prep....Prices from $2.49- $3.49
Be cautiuos of Vynil and/or rubber products...they tend to do poorly in garage enviroments due to staining, exspansion and contraction, the need for glues in some application and most importantly create a vapor lock, by not allowing air to travel freely under the floor