Hi,

For the RWD Volvos it is impossible. Our cars has a closed system control.

It could happen in much more modern cars especially those with integrated media connection with external device such as iPod/iPhone. Thru this connection the USB device could hack into the car's computer.

Our RWD has no USB port. Even if you put portable USB adapter into the cigarette lighter socket it reads no data, only supply power to a device.

The way to monitor our driving habits is to ask someone follow from behind or install a USB dashboard camera (itself has recording ability) to our cars. But if these are done we'll know it.

For that explosion to happen the fuel hose must broke first. In our cars you can see that it is firmly double insulated and the main hose uses no Jubilee clips from end to end (unlike in some luxury cars). Another risk of explosion is in cars that use the new refrigerant 1234yf for their A/C (google the Mercedes safety issue of not using this new refrigerant for their latest cars). In frontal impact the A/C pipes may twist and broke but we still use R134a (some still use R12) which is considered lowly flammable.

Amarin.