Want to make a Highway/Road in TGEA

Anyone have any suggestion on how to make the road? Should i model it on MAX then export to DTS? or should i work with DIF like files?

I need a road that have shaders on it and of course collisions so the car wheels don't go trough it, any suggestions on how to start?

Btw, im pretty new to TGEA, but i just saw its pretty similar to TGE in many aspects so i been playing for this first few hours and i want to start producing something :)

Thanks a lot in advance