Track 3 coins - rush2049.tripod.com
From WHY
Thanks to Beamer for the coin count

7 coins under first bridge
40 coins in secret area accessed by running over logo
     9 In channel behind gate opened by logo.
     12 Up on back right side of half pipe
     7 In middle on the ground of halfpipe
     11 Up on the left rim
     1 coin hidden on the wall at the top of the yellow half pipe (thanks Hamster)
3 coins off in town between buildings on short cut
2 coins in the back of those buildings
1 coin in train entrance on the right
3 coins up and over pedestrian bridge
1 coin in door way of Japan town building
1 coin on roof of building (accessed by jumping up the left side of the ramp to the 
blue shortcut)
8 coins in reservoir off to the right (accessed by jumping of the hill to the right of
the detour shortcut)
1 coin to the left behind the radio building just past the dirt stretch
10 coins in the Radio towers/LAVA shortcut at the end (accessed by driving up and
falling into the steep hill to the left of the first jump on the detour
6 coins on the left side of the Radar dish tunnel/shortcut
1 coin in the back of the building to left of radar dish ( go between the two 
buildings to the back left corner
6 coins behind building on the left coming down the hill to the start line
(several entrances)
10 coins to the right up top in green short cut tunnel on the way to the finish line