RE: Portable ramps !
Personally, if i were you i would go with the RCBasher Simple and Compact Folding Design. This one is a little heavy, but it's easy to build, adjustable, inexpensive, and doesn't take up much space in the garage or the car. And no curved cuts are required!(Got that of the site) I built the Fixed Curved Ramp with 45-Degree Exit ramp and its fine. Fits in the back of the car. Its great. Or you could even put it on a trailer if you wanted. That duratrax ramp is pretty much a peice of crap. Dont get it. Have fun anyway.