Have you done this?
3) Replace lines in handling.cfg:
STREAK 5500.0 65000.0 3.0 0.0 0.0 0.0 90 0.58 0.8 0.5 4 110.0 20.0 20.0 R D 03.17 0.40 0 30.0 1.4 0.06 0.0 0.45 -0.10 0.55 0.0 0.65 0.20 5000 8 200 0 1 2
4) Replace lines in vehicles.ide:
538, streak, streak, train, STREAK, STREAK, truck, ignore, 10, 0, 0, -1, 1.06, 1.06, -1
570, streakc, streakc, train, CSTREAK, STREAKC, coach, ignore, 30, 0, 0, -1, 1.06, 1.06, -1
5) Replace lines in carcols.dat:
streak, 1,3
streakc, 1,3