Did they try taking away its credit card?
Video shows an angry rhino charging and attacking a zookeeper's car at the Serengeti Park in Hodenhagen in northern Germany.
The 30-year-old bull, named Kusini, went on a rampage, using its horn to flip the zebra-striped car over and over again.
A worker inside the car throughout the attack suffered some bruises and other minor injuries.
Kusini has only been at the safari park for about 18 months and handlers say he's only allowed to roam early in the morning or after the park closes, so guests were never in any danger.
Read more about the angry encounter here.