Police in Osnabrueck, in northwestern Germany, say they found the drugs while checking an Austrian-registered car on the A30 highway on Saturday.
They say the people in the car, a 51-year-old man and his 17-year-old son, told officers they had been in the Netherlands to buy a vehicle but hadn't succeeded so were returning home.
Officers said they found about 5,000 of the orange, Trump-shaped ecstasy tablets along with a large, but unspecified quantity of cash.
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