A reciprocating motor - say 500W - with an attached reverse-spade blade, on the end of a stick.
Push it into the ice and chisel down to the driveway surface ; then, turn it flat and go to town.
Safety goggles highly suggested ; may cause minor damage to uneven asphalt surfaces. Not recommended for vehicle windshields.
Can be used as a garden edger during the summer.-- FlyingToaster, Feb 21 2019 Baked - Kango hammer. <link>-- 8th of 7, Feb 21 2019 //Kango// Well, say 1/5 the price and 1/3 the power of the very lightest/cheapest of those, with a flat-shovel blade rather than a breaking-bit, mounted on the end of a stick, for separating ice plates from asphalt at say 10cps, rather than boring holes in concrete. But hey, other than that...-- FlyingToaster, Feb 21 2019 They make many attachments for a Kango. One of them is a wide flat steel blade for removing tile and mortar from concrete.If you don't hold it at just the right angle it digs into the concrete itself.
They also make wide blade attachments for a Sawzall tool. This might be about the size you want and the speed is then variable rather than shoulder dislocating.-- 2 fries shy of a happy meal, Feb 21 2019 random, halfbakery