Audi ≫ E-TronAudi e-tron quattro concept photo galleryby Joshua ThompsonThe Audi e-tron quattro concept will be unveiled at the 2015 Frankfurt show, and previews a new all-electric SUV to take on the forthcoming Tesla Model X. ◄ PrevNext ►Credit: Audi Audi e-tron quattro concept – headlight with e-tron light sign Tags:audiconcept care-tronfrankfurt motor showfrankfurt motor show 2015quattro