While driving the at the Silverstone track , about halfway 
to the end of the track, you will notice several grandstands 
on the left side of the road. After the third or fourth in a 
row on the left, a hotel will come into view. If you continue 
towards the hotel, and don't make the turn, you will see a 
service road. Continue on that road, and it will lead you back 
onto the main track. You will advance several positions in the 
race if you do this correctly.