I was thinking of the severity. How serious was the issue with air pressure - what was it? How many vehicles affected - 1? 2? All of them? Did any fail outright and have to recovered? If so, how so - on the shuttles or to/from Silverstone?
These are hypothetical questions
and I don't expect you to answer them 
It just seems odd that these vehicles are being written as being potentially unreliable a) on the basis of some vague driver chat and b) before they've entered full service. If in three months time, there's dealer spec e400mmc tragically abandoned along the A1079, then fair enough. Give them a chance.