What do Indians mean by non-stop honking: Mercedes-Benz India CEO

Mercedes-Benz India CEO Martin Schwenk, who moved to Pune last year, said he doesn't understand what people "mean by the incessant honking". When asked which aspect of India took the most time adjusting to, Schwenk said, "The Indian 'head bob' did take me some time to get used to." He added he finds Indians to be very friendly and competent.