I park in a very small garage with only a few inches of space between the G35 and the walls. Does anyone know of a parking sensor system that would help me?

Thanks

 

a tennis ball on a string?

 

I have never seen a parking sensor that monitors the SIDES of the car. They typically just do the front and back of the car. The tennis ball method is a tried and true method of not hitting anything. Just hang it in the middle of the garage and then line it up with the rear view mirror.

 

Could try this...a laser beam.
http://www.smarthome.com/7187.html
or this kinda interesting solution... with multiple sensors and LCD readouts.
http://www.accessorytown.com/Automob...dex.html?id=43