Except when it gets to the point where the company is billing the customer for travel, but they are not paying you. Also I can see that if this has been imposed on you it amounts to a pay cut. There aren't many perks left being a service engineer, in the UK anyway. The van used to be a perk but now the tax system means it costs £600 a year to have the van for private use. Not worth it for most people who have another vehicle (or access to one) as you still have to pay for fuel. Personally I'm sick of the sight of it at the end of the week!