gtasa/data/handling.cfg
freeway       800.0     403.3   4.0    0.0 0.1   0.0  103 1.2 0.82 0.51 	4 190.0 40.0 5.0  R P 	10.0  0.55 0 35.0  	0.65 0.20  0.0   0.09 -0.11 0.55 0.0		0.0  0.24 10000 	1002000		0			1  1	6

gtasa/data/carcols.dat
freeway, 0,0, 1,1, 2,2, 3,0, 6,0

get that mod car colors make your game more cool ;)
http://www.gtainside.com/en/sanandreas/mods/86342-car-colors-mod/