Ah, handwashing... something to occupy the poor bloody cannon-fodder. Dig the nose-pickings and MRSA and faeces from under your fingernails, slurry it with the general muck on your hands and rinse some away. Then take the remaining dilute solution to the air-driers and create an aerosol to blow back towards all the unsuspecting folk queueing at the stalls. Next time you are at the hand driers look at the floor under them. Bring back paper towel.
As mentioned earlier.. just like the cold war - with a 4 minute warning one had to whitewash the windows, take a door off it's hinges, lean it against a wall and sit under it to protect oneself from fall-out...
And surgeons know that washing their hands is the best they can do, followed by sterile gloves but within 15 minutes the inside of those sterile gloves is a sweaty soup of bacteria up from the pores.
If really worried about your car surfaces then put on some latex gloves, wipe the handles and inside down with damp paper towel so the majority of contaminents can stick to it...bin the paper and the gloves.