My first “roof-topping” experience was an amazing way to kick off a sleep-deprived mini tour of a few sites down South (of Norfolk that is). It all started with me pootling down the A11, already a bit knackered from a heavy night the night before… until I wondered who that idiot was blocking me in in the right-hand lane. Turns out it was UrbanX, laughing his arse off at the idiot on his inside lane who had abjectly failed to…