I really hope in the next few years we see a revolution in short distance transport. Most journeys are less than 3 miles (if I remember correctly, could be 5) a perfect distance for e-bikes, e-scooters and normal acoustic bikes. Hopefully at least some places capitalise on it
Would guess they are trying to puncture whatever keeps the pontoons afloat. I know nothing about the bridge pontoons though, but seen plenty of helicopters with lots of holes in them