More from the Race Car DNA series:  following on from our previous F1 Steering Wheel feature, we delve even further into the technological evolution that has taken place in the Formula 1 steering wheel. Join Vodafone McLaren Mercedes engineer Rob Irwin for a guided tour as this grid1tv web-exclusive video takes you inside the MP4-25 wheel as used (and customised) by former World Champions Jenson Button and Lewis Hamilton.

Watch the original Mobil 1 The Grid video here.