Bad day, I pulled onto the M4 at Coryton J32 about 100 yards behind the lorry that took out about 50 metres of central reservation armco and spewed it all over both carriageway.
An hour and a half later, having been turned round and sent back up the on ramp by bill, I was 1 minute from my house where I had started my journey, trying to get onto Llantrisant Road.