[pandaman]

Perhaps these people don't have means to charge their vehicles so they would not be able to charge a BEV too? I cannot imagine why anybody who has access to a charger would intentionally leave a PHEV uncharged, what is the point? Are you in an area where hybrid is cheaper to run on gas?

[danhor]

Often these are company cars (with private use allowed), where gas is paid for by the company

[pandaman]

Looks like it's a problem with the "unintended consequences" of the taxation and not the PHEV per se.