The world's cheapest (and, some might say, ugliest) car is on fire - literally. Three spontaneous conflagrations have erupted from the steering columns of early examples of the Tata Nano. Only around 7500 Nanos have so far been delivered to customers. No injuries have been reported as a result of the fault, which Tata claims is caused by a short-circuit in the headlight/indicator/wiper-washer combo switch. Tata has committed to a pre-deliver ‘audit' of upcoming Nanos, but has so far sidestepped the dreaded ‘R' word (recall). As many as 200,000 Nano pre-orders have been lodged, which should be only about 80 steering column fires' worth.