This is political grandstanding, if it wasn't they'd be kipping down away from the media glare rather than drawing attention to their sacrifice, right down to the location and time of their carpark sleep over.
But they claim they're drawing attention to the problem which presumes we've all had our heads buried in the sand in recent weeks, drowning out their constant howls about housing.
It's just plain silly to say, as they have been, that a Government, regardless of its political hue, doesn't care about the homeless.
The Clark Labour Government cared about it as well.
A snapshot of the problem, seven years into her Government, showed almost 34 thousand people were listed as severely deprived when it came to housing while those without a roof over their heads numbered about five thousand.
Fifteen percent of those facing deprivation lived in the street or in impoverished or mobile dwellings, including cars.
The finger pointing gets us nowhere and MPs, rather than sleeping in cars, should wake up and work together to come up with a solution.
The reality is though that there are only so many houses that can be built in a day.