Chevy says 98 percent of the ZR2 concept's components are production parts ... EV ZR2 to sit above it — the bow-tie brand may spark a new electric off-road truck war. I, for one, am here ...

At about 14 inches shorter than the Chevrolet Sonic subcompact (in hatchback form), the Spark measures up as longer than a Smart Fortwo or Fiat 500, or about the same length as a base Mini Cooper.