More than likely the transmission has gone into overdrive.
Proberly a miss fire in one of the cylinders.
If you are driving for a period of time over 45 mph then use overdrive. If you are driving under 45 mph or in traffic that is speeding up and slowing down over and under 45 mph then do not use.
51.429 seconds (rounded)
It's theoretically possible. The maximum speed for a dog or cat is around 30 mph.
One hour.
It will take about 7 hours and 40 minutes of total driving time at a constant 60 mph. Your total travel time will be longer if you slow down or stop along the way.
Check and see if the fan cluch is good. Your fan. At higher speeds, the fan is not needed due to the high airflow. At low speeds and idle, you need the fan to operate to cool the car.
it depends on how hard u stop
Mostly 30 mph, as for all built-up areas in the UK.
6 hours 34 minutes @75 mph
5 hours 58 minutes at a constant 65 mph, excluding stops.
30% is the dvla answer