In a climate crisis-ravaged future metropolis, an old, grumpy, obsolete, smoke-belching, cigar-chomping, hotrod-racing robot is one 12-year-old girl\'s only hope. Together, can they outrace the chasing Robo-Cops with an invention that might just save humanity? Collects Petrol Head #1-5. (W) Rob Williams (A/CA) Pye Parr