UK's Duchess Catherine joins school children down on the farm

China to allow car selling without brand authorization Russia, Turkey agree to remove trade restrictions Secondhand vehicle sales up Tesla denies it plans to open plant in Guangdong UK's Duchess Catherine joins school children down on the farm Auto parts maker eyes Mexico market China's self-driving truck passes test China could be world's leading electric vehicle producer: Expert China comes to Central Europe Britain's Prince Philip to retire from royal engagements in August China's passenger vehicles sales fall in first quarter Poland embraces strategic development role Korean brands' strength falls Le Pen struggles to damage Macron before French presidential election GM China sales grow 16% in March Chinese manufacturer to enter F1 in 2018 EU spokesman rejects British PM's claim of election meddling GM joins chorus warning of used car glut, pricing drop German automaker VW sales slightly down to 2.5m in Q1