If you drove past Solly somewhere out on the reserve, you look up in your rearview mirror, you'd see he'd stopped the car 20, 50 meters down the road just in case you need help with something.
Se passasse pelo Solly, de carro, algures na Reserva, quando olhasse pelo retrovisor iria reparar que ele teria parado o carro a 20 m, 50 m de distância, "para o caso de precisar  de ajuda nalguma coisa."