Isn't there usually an inverse relationship between horsepower and mileage?
2,003 Insight (manual) 59 MPG highway, 73 HP, 4,307 Baconunits
2,013 Prius 48 MPG highway, 134 HP, 6,432 Baconunits
1,994 Geo Metro XFI 52 MPG highway, 49 HP, 2,548 Baconunits
2,008 Ford F150 19 MPG highway, 248 HP, 4,712 Baconunits
2,014 Corvette 29 MPG highway, 455 HP,
13,195 Baconunits
Quick! Someone do the math on a 227.5 HP motor swap!