Chasing Cars (again)

I use this bit of motorway every day on my journey to work, but it was only recently that I realised the bridge was illuminated at night so it had to be blipped today!

I couldn't believe my luck with timing this one, an Ambulance was just heading North as I hit the shutter, lucky for me anyway but I'm not sure the same can be said for the poor soul who the Ambulance was for!