Are there any statistics on traffic tickets per vehicle type?  I
believe there's a corrlelation between the TV commercials showing
drivers really pushing the vehicle, and purchasers of those vehicles
emulating the commercials.

Assuming you find numbers that are consistant with your theory, how
are you going to prove that a higher number of tickets is not due to
the image of the car influencing the police officer's decision to pull
someone over?  They watch the same TV commercials as the driver, and
writing tickets is completely under their own discretion.

You would need speed data for cars that were not ticketed in the same
time frame and areas in order to make a legitimate analysis.

You make a good point.  I'm sure the commercials affect the police
response too.  I still would find the statistics very interesting (if
they are available)

I have heard that the color of a vehicle plays a significant factor in
getting a ticket- with red being the most ticketed color.  Not exactly
what you were looking for- but definitely a factor in getting a
ticket- maybe more than even vehicle type.