Firstly, get yourself a jet-powered helicopter, equipped with an extremely powerful heat gun (Like a giant hair dryer) This can be achieved by routing the jet exhaust downwards, through a controllable nozzle.

Find yourself a pothole.

Use the jetwash to dry out and eject any mud / water / slush / snow in the pothole, whilst hovering above it. Cars can mostly pass harmlessly through the hot air stream though it could get a bit messy if you are driving a convertible full of empty crisp packets and burger wrappers.

While this is going on, Use a miniature LASER scanner to map the dimensions of the hole exactly, creating a map for an onboard CNC router to carve an accurately shaped shell out of cold pitch. Drop a small LASER target designator into the hole.

Lift away to a couple of thousand feet, using military targetting jiggerypokery to track all approaching vehicles' paths and velocities, to determine the perfect launch moment.

Fill your routered shell with high viscosity road resurfacing goop and a couple of rapid heating and cooling grenades.

Launch your LASER-guided pothole bomb, steering it into the hole perfectly, where the heating devices detonate first, melting the pitch into the hole, then the cooling devices to set it all solid. Cars passing over it finish the job, rendering the repaired surface smooth and flat.

Move to the next pothole, YEEEEHAAAARRRR!