Maybe something like a Bobcat MT52 walk behind. It is only 3' wide. I think you can get a little backhoe attachment on it. Another idea I saw on TOH is they put a chain around the base and then pull it out with a Bobcat. But you would need to be careful not to rip the driveway out with it. Yeah, chemicals will kill the stump. Straight Roundup will do the trick and it says so right on the bottle.

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra