Have no-frills rental cars damaged the brands of the Big Three?

FORBES: Detroit's Brand Killer

The big three have each agreed partnerships with High Street brands which they say the public recognise and - crucially - trust.

BBC: NEWS | Business | Perils of the motorway pit stops

Reality TV is one of the big three juggernauts of Social TV (along with events and sports) and personalities tend to drive the brands on social media.

FORBES: American Idol Breaks Social TV Record, Destroys The X Factor [Infographic]