There are Code issues with that, but I get your point.
I think I'm going to stick with my original plan of wiring the garage for a NEMA 14-50 and converting my range and dryer to gas (things I have wanted to do anyway). My house is older, and the range is on a 40 amp circuit (new ones are 50 amp) and my dryer is on a 30 amp circuit.
Aside from gas being less expensive than electricity, I find my range and dryer are usually running during mid or on-peak rate periods, so it should be even more economical having these appliances running on gas.
Well, you've got relatively expensive electricity. I ran the numbers in upstate NY and concluded that electricity was on par with gas, and electricity is actually getting cheaper here; meanwhile, natural gas is getting more expensive *VERY* quickly, for whatever reason. (We discussed the curious contrary trends of electricity prices rising in Ontario and dropping in upstate NY a while back.) I recently replaced my gas dryer with an electric one, and I appear to be spending the same amount of money.
I guess what I'm saying is I wouldn't expect gas to *stay* cheaper, so I would leave the dryer circuit in place for the future. Gas is just much easier to use for a range, however; electric is finickier. You'll probably enjoy that change if you cook.