I think that your best bet would be not to do anything. Any solvent that will be strong enough to attack the glue will also attack painted metal and plastic. The plastic will flex and the glue will come off in a relatively short time. Glue on chrome plated metal would be a candidate for removal with acetone, Goof Off, Superglue remover or other product but you would have to be very careful not to get these solvents on chrome plated plastic, painted metal or similar materials.
If you really have to do something, and I do think that letting time and use would be the best course, but if you have to do something, run the car through a car wash a couple of times. The hot soapy water will find its way under the glue.
Henry in MI
.
