screw the 2 second rule … i prefer 4 seconds in normal driving
if i have to move over because of another driver or to get off the highway or whatever, then i work w/ whatever i have
but 4 seconds let yo glance at the radio or your gauges and still know that if someone spikes their brakes just as you look away, your still covered
sorry to say, nothing against you or anything … but … 
for anyone that follows to close
at the same time, glad to see your allright … id take stitches and road rash over rear bumper / face full of glas any day