If you barely use your car, you might not even need it anymore. Perhaps a taxi/rental/car pooling might meet the few times you still take it out of the garage? Specially when you put the numbers down and see how expensive it is to maintain a car

I have a better alternative: invest in viable alternatives to driving! expand protected bike lanes, build the damn high speed rail, more trains, trams and bus lines. One more asphalt lane for cars wont solve traffic problems :)