Give me some points on prevention of vehicular pollution is better than cure?

Question

Give me some points on prevention of vehicular pollution is better than cure?

Answer 1

an oz. of prevention is worth a pound of cure. (period)

BUT

electric cars are a waist of CO2

Hybrid cars are a waist of time

Hydrogen cars actually pollute the most

these statements are made accounting for the total footprint.

Honda CRX HF is the best.

Bio fuel is about in the middle

walking and bike riding is the best

For an example I have ridden a Bike back and forth to work for about 8 years 7 months out of the year. it is 13.8 miles and about a 1200 foot clime on the way home. Time to drive 17 min, time to bike 23 min