Shifting with a button works great, and I guarantee is faster than shifting with your hand.
Sorry, but it does not work as well as you think. I have a dedicated machine, and I have Tried to use other methods with the pc.. and they dont compare.
Its not merely about speed. Its about the fact that you already have your hands full of things happening.. and have to reach out to accurately shift. The lever makes that easy, comfortable, and superior. You also dont have to memorize more button locations. Memory fails often under stress.
As even less buttons than you mentioned are necessary - you can only have one weapon at a time, hence a dedicated button for each weapon is cosmetic - you need only three: machine gun, weapon, and shift. A yoke has four.
WRONG!!! YOU can have ALL the weapons at the same time. Its just that Obviously you are not good enough to keep them all long enough to attain them all.
Machine Guns
Smoke Screen
Oil
Missiles (I guess you never shot down the helicopter either?)
As for throttle, I think using the Y-axis works great for throttle. (You don't have a throttle problem, you have a lack of stool problem.) The only reason I haven't scored above 35k is because there's a slop/dead zone in the center of my X-axis. I haven't bothered to take it apart....
You obviously have a problem playing, considering you cant hold more than one special weapon, have not had / used missiles, etc.
Did you even know theres a Boat stage?
Icy Roads?
Did you know that the Van has an icon on top of it, so you know what weapon it carries?
Did you know that you can bump a switchblade car off the road - even if he is mostly behind you, by clipping the very front of his car, and not getting killed by his blades?
Did you know that The Oil slick isnt limited by a number of presses... that it actually runs out based on volume. If you only press it quickly and release it immediately, you can make it last a Lot longer. Oil also turns into a wall of fire out in the boat stage.
Did you know that the game tracks how fast you turn the wheel.. and that speed is calculated into how hard you BUMP another car? So if you slam the wheel hard and fast as possible, the other cars will be pushed away further. And if you barely bump them at all, the enemy cars slam will overpower your bump, and you will be the one moving.
Did you know that if you keep under a certain speed... that you will bump off pedestrians rather than die from a wreck?
Have you ever shot a pedestrian to use as a projectile against the trailing enemy cars?
Did you know that if you shoot the Van as you are entering it... it will still give you a weapon... them will blow up after you exit?
A real pedal is needed to actually play the game Well.
Hook up a set, and find out for real, rather than making up baseless opinions.