Some deluded nonsense posted here. A bank won't let you remortgage your house to buy a car or pay for foreign holidays unless you've taken a significant chunk out of the mortgage (ie, you're middle-aged and earning more than average). If you want a new car, then you take out a car loan from the bank and that's assuming you're managing your mortgage payments. Your credit rating is constantly updated and monitored, if things start getting out of control, it's not long before alarm bells go off and the credit tap is stopped.
Not true - I know two people who've remortgaged their apartments within 12 months of purchase to buy new cars. They didn't use car loans, they used 'equity extractions'. They're both FTB's on average salaries.