A CAR expert has revealed a hidden feature that can change your motor from automatic to manual at the touch of a button. Driving whizz Xiao Qiao took to TikTok to share the handy hack with her followers. 2 Xia Qiao revealed a hidden manual mode in automatic cars Credit: TikTok/chequanxiaoqiao 2 Put your car in driver then shift to the left to engage the manual transmission Credit: TikTok/chequanxiaoqiao In the clip, Xiao, from China, was demonstrating the function of each gear in an automatic car when she unveiled the little-known feature. Automatic drivers may notice that there are usually…