 Complete the following phrase:  The VR-01 was officially launched on the teams website on 3 February 2010. The car passed its mandatory FIA crash tests, and completed its first track run at Silverstone on 4 February in the hands of Glock. It tested with other teams for the first time at the group test at Jerez from 10 to 13 February. On the first day, Glock completed five laps of the track during wet weather conditions. On the second day, he completed eleven laps before the cars front wing failed; the team had to abandon the days running due to a shortage of spare parts. Virgin modified the front wing mounting of the VR-01 ahead of the third days running in Jerez, where di Grassi ran the Virgin for the first time. The following test was plagued by weather conditions and the car suffered a hydraulic problem on the first test day and Glock only managed 10 laps. On the next day Glock notched up 72 laps for the car and had no mechanical problems, however the weather was still wet. Di Grassi took over for the remaining two days of the test. Technical director Wirth said that the hydraulic problem was solved and the car had not suffered any big glitches. The problem recurred, however, at the final pre-season testing session held in Barcelona, costing the team further track time and necessitating a further redesign of the relevant components ahead of the season-opening 