I'm enjoying Hill Climb Racer quite a bit, and have a list of positions where the fuel stops are. Please note that I have not played the alien planet, and some of the later positions are extrapolated using the formula, rather than from experience. So let me know if the formulas doesn't hold up at a point...
Countryside | Desert | Artic | Highway | Cave | Moon | Mars | |
every 90 (n*90) | every 90 (n*90) | every 90 (n*90) | Previous + 150 + 30*(n-1) + floor((n-1)/4)*30 | Previous + 150 - ((n-1)%3)*30 | every 90 (n*90) | Previous + 150 + INT((n-1)/3)*30 | |
0 | 0 | 0 | 0 | 0 | 0 | 0 | |
1 | 90 | 90 | 90 | 150 | 150 | 90 | 150 |
2 | 180 | 180 | 180 | 330 | 270 | 180 | 300 |
3 | 270 | 270 | 270 | 540 | 360 | 270 | 450 |
4 | 360 | 360 | 360 | 780 | 510 | 360 | 630 |
5 | 450 | 450 | 450 | 1080 | 630 | 450 | 810 |
6 | 540 | 540 | 540 | 1410 | 720 | 540 | 990 |
7 | 630 | 630 | 630 | 1770 | 870 | 630 | 1200 |
8 | 720 | 720 | 720 | 2160 | 990 | 720 | 1410 |
9 | 810 | 810 | 810 | 2610 | 1080 | 810 | 1620 |
10 | 900 | 900 | 900 | 3090 | 1230 | 900 | 1860 |
11 | 990 | 990 | 990 | 3600 | 1350 | 990 | 2100 |
12 | 1080 | 1080 | 1080 | 4140 | 1440 | 1080 | 2340 |
13 | 1170 | 1170 | 1170 | 4740 | 1590 | 1170 | 2610 |
14 | 1260 | 1260 | 1260 | 5370 | 1710 | 1260 | 2880 |
15 | 1350 | 1350 | 1350 | 6030 | 1800 | 1350 | 3150 |