If I'm not mistaking, that's a German Leopard2, about which is often said "you have to drive it like a pimped out Golf-GTI.
The "official" top speed of this bucket is 68 kph, but it's more or less an open secret that even the standard peacetime version can get up to 80kph or more. There even is kind of a legend about one crew that managed to hit 100+ kph on a long descending straight after some fiddling with the engine...

Wait.. peace time version?

as in "the model you give 18 year old punks on draft to drive around the training grounds". Those engines are actually tuned down to improve overall lifetime afaik.

Weight 62.3 tonnes -> 56517.61 kilos

speed 80km

Kinetic energy 13,677,261.62 Joules

# 1×106 J, the kinetic energy of a one tonne vehicle at 45 metres per second (100 miles per hour)
# 1×106 J, approximately the food energy of a snack such as a Mars bar
# 1×107 J, the energy of a day's worth of heavy labour[2]
# 1×108 J, the kinetic energy of a 55 tonne aircraft at typical landing speed (115 knots or 59 m/s)

powers of 10 are crazy

4 more comments have been lost in the ether at this killed duplicate.