No, I am comparing all the varying forms of alternate methods of vehicle propulsion, as mentioned. I've also not seen any data regarding how much it would take to run a compressor, nor how compressed it would have to be (as in, whether or not a standard garage compressor could do the job, or if it was way above that psi rating). Either way, you're still using grid electricity to run it, where others don't, or hydrogen can even provide electricity back (as with other methods of supplying your own electricity).