Porsche in touching tribute to Audi

Porsche have paid tribute Audi following their exit from top-level prototype competition.

When Porsche re-entered the World Endurance Championship, Audi greeted them with a video of their R18 prototype performing burnouts outside Porsche's headquarters, spelling out 'Welcome Back'.

Porsche have now responded after Volkswagen Audi Group stablemate Audi quit the WEC at the end of this season