Do standard cars seem too slow and clumsy to you? This config should help you with this matter. Almost every vehicle has been improved in terms of speed characteristics, with the exception of boats and lethal vehicles due to the fact that they are much more difficult to modify. Moreover, the game limits the speed of aircraft to 225 km/h.
A little about the characteristics of specific cars:
RECOMMENDATIONS! I strongly recommend downloading the .asi plugin that disables the speed limiter in specific places. You can also download the CLEO script to control traffic density. Many missions will change their true feel; some missions will be either very easy or very difficult. So bet as you wish.