Your last statement misses the point. I doubt raising the price of gas to $10 per gallon would change care usage all that much (although it would likely greatly

Your last statement misses the point. I doubt raising the price of gas to $10 per gallon would change care usage all that much (although it would likely greatly increase the pickup speed for electric vehicles) because demand for vehicle transport is very inelastic because the actual problem is zoning and land use making cars the only viable option. Make a bunch of simple changes to zoning and land use laws and sit back and in a couple decades you would be surprised how drastic the change can be because that's 20 years of all construction (including road repair maintenance) pushing the shape of the city in a direction that supports a multitude of transport options and ultimately makes the city a lot more vibrantly human rather than loud, dreary car based annoyances.