This is the 5276th most frequent German word.
autofahrers
"Autofahrers" means "car drivers" in English.
In this sentence, 'autofahrers' is used in the genitive case to denote possession or association, meaning 'the caution of the driver'.
Die Vorsicht des Autofahrers verhinderte einen Unfall.
The caution of the driver prevented an accident.
Here 'autofahrers' is again in the genitive case, used to indicate 'the documents of the driver'.
Die Polizei kontrollierte die Papiere des Autofahrers.
The police checked the driver's documents.
In this usage, 'autofahrers' could be misused as it's not a correct form in standard German. Instead, 'Autofahrer' would be used in the accusative case, meaning 'I saw the driver.'