Look, human conversations are full of context deduction and inference. In this case “I want to wash my car. The car wash is 50 meters away. Should I walk or drive?” states my random desire, a possible solution and the question all in one context. None of these sentences make sense in isolation as you point out, but within the same frame they absolutely give you everything you need to answer the question of find alternatives if needed.

Sorry for the random online stranger diagnosis but this is just such an excelent example of neurodivergent need for extreme clarity I couldn’t help myself.