I mean, you're supposed to take the ticket when you're pulled over, and I don't believe we should make it easier for people who aren't in the vehicle when driving it.

Write the ticket, hold it out at the car window, when no one takes it write "Refused", make everyone exit, disable the vehicle until it can be towed to impound, and keep it at impound until some responsible person comes to claim it, sign the ticket, and pay the fees.