 Complete the following phrase:  To start 2014, he raced the No. 21 RCM Motorsport Chevrolet Sonic alongside Thiago Camilo for the opening round of the Stock Car Brasil season at the Autódromo José Carlos Pace; the duo retired on the first lap due to a clutch failure. Di Grassi was retained by Audi for 2014 and was promoted to a full-time racing seat. He was selected to replace the retired McNish in the No. 1 Audi and shared it with Kristensen and Duval. Di Grassi started the season by retiring due to chassis damage arising from a crash at the 6 Hours of Silverstone, but recovered to finish second overall at Spa-Francorchamps. Although the No. 1 Audis fuel injectors and turbocharger were replaced, di Grassi, Kristensen and Duval took second at 