Katrina rides a Royal Enfield as actor Hrithik gives her company in a promotional gig for ZNMD.Katrina Kaif literally took Hrithik Roshan for a ride when she vroomed down the roads of Mumbai on a Royal Enfield even as he rode pillion on Friday afternoon.Biker babe Kat and Hrithik were actually engaging in some smart, pre-planned promotional activity for their new film, Zindagi Na Milegi Dobara (ZNMD).The gig was in sync with a highlight scene in the film, where Katrina chases Hrithik’s car down a scenic highway in Spain. After she catches up with him, the film’s much-touted kiss between the two stars follows even as their co-stars – essaying assorted characters – watch in amusement.On Friday, the paparazzi and fans who had gathered on the road of Goregaon’s Film City however had no such luck since Katrina and Hrithik did not follow up their short bike trip with a live smooch.Katrina arrived at the location early and did some quick riding rehearsal on a 150cc bike alone.She then did some double-ride practice with hairstylist Hakim Alim on the pillion. Hrithik arrived soon after and the onscreen couple took a ride that lasted about 10 minutes.Frenzied mediapersons, shutterbugs and fans followed them, some on two-wheelers and others running down the road, even as bodyguards of both the stars tried to keep pace.”It was a publicity stunt to promote the film, but so what? When Kat is riding a big bike with Hrithik sitting behind her, who would give up the chance to watch?” said 16-year-old Harshit Samarth, a self-confessed Katrina fan, who reached the spot almost two hours in advance.advertisementKatrina was indeed dressed to bike, in laced boots, grunge Tshirt and a pair of jeans. In sync with her tomboyish act, she sported no jewellery and had only a simple hairband holding her tresses back as she drove.Hrithik turned up in a Harley Davidson cap, a tight tee and blue denims.