The company that make them, Mark I Tanks, here in the UK, do quite a range of vehicles in different scales. They are mostly metal construction and feature thinks like digitised sound and smoke synced to the motor speed, also an option for firing BB and anamatronic figures.
The 1/4 scale Tiger II weighs in at around 250 kgs and will all the extra's and customised finish will set you back around £8k
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