SSP's with .50 cal and micklicks for ground superiority?

When will they ever make a SSP (single seating patrol vehicle), like an ATV, that has a .50 cal hooked up to it, with micklicks? I would have the targetting system with the crosshairs visable on the soldiers visor he had attached to his helmet. then they can chase the insurgents with heavy firepower at high speed and be able to navigate the streets of Iraq or the off roads of Afghan. they could fire a micklick to clear the way, then use the .50 to make themselves even more present