You start work at a given time, in my book that means your ready to start work at that time and not the time you arrive at work and follow that up with turning on all computers, having a poo, reading papers and sending out for a 'brekie' roll.
And. After market Sat Navs, stuck slap bang in the middle of the windscreen at night. How the **** can you see everything properly with a small cinema in front of your face. I've worked out that it could block your vision at junctions and people at crossings.