[papad]

Ha totally agree. The loops and vicious turns are central to a roller coaster (and being tied to the track). Without those, sledding is way better cause you can get some serious airtime on the right hills and have some control over your direction too.

Overall a neat project for a large college team to work together on but the end product doesn't appear that functional/fun.

[matt_morgan]

Doesn't appear fun? Stop thinking for a minute!

I want to ride it. My son would love to ride it.

[papad]

You definitely have the right perspective. If I put my kid's hat on, it definitely would be fun. Doing the simplest things with my nieces and nephews are extremely fun :)

[pavel_lishin]

I believe that the cart is tied down to the track - you can see it in the video, there are wheels on both sides of the board.

[Retra]

Loops are extremely dangerous if not done properly...