Building a working model roller coaster!

[A RC Dude]

Ok, so I built one in 7th, 8th, 10th and now another one for 11th grade. But this year, i've taken it up several notches by building a realistic train instead of having just a marble on two tubes for rails. The competition is may 14th at carowinds (a theme park) so i get to get out of school that friday (excused absence) to comete and spend a day at the park overall winner (this should be my 4th one) gets 2 free tickets. so this is what i've got this year.

The logo/sign that will go on the station:


One of the loops:


Overbanked "rainbow" curve:



Everything as of thursday night:


I still have a lot planned to do with it but all the hard stuff is done, what do you think?