what scale cars are you going to use on the track? Inside or outside? My LHS uses old firehoses for barriers but it is outside and fairly large track. If it is mini z or x-mods you are racing, id recomend the type of track seen in post #11 in the above link. The only thing is that i dont know where to buy it. you can ask the guy that posted the pic and post, but i think that it is expensive.