The tires of the truck that Catherine drives are all-weather, and therefore, during ice-breaking, the girl is forced to be extremely careful (especially when moving uphill), and keep a distance with other cars.
In the modern world we often observe a biased attitude towards couples with unequal age. It is normal for us when a husband is older than his wife, but everything that goes beyond this framework is considered strange. But there are also couples who prove that the age difference is just numbers.