Seems odd, as petrol stations have had this technology for some time to avoid drive offs. Why don't they join it all up - stolen cars would be a lot less attractive if you couldn't put petrol in them! You only need a 'go / no go' from the PNC, and it could fail 'safe'. Petrol station operator would need to be able to override it too I guess.
Tim Hobbs
'58 Series 2 '77 101FC Ambulance '95 Discovery V8i