Not necessarily ... I've "lost" a car in the blindspot on the nearside of the cab in that very model of truck before now, and I can easily imagine a situation on a motorway where the car driver gets into that blindspot without the driver seeing him. Say - and I have no way of knowing if this is what actually happened - the lorry driver is in the middle lane overtaking another truck. The car driver enters the motorway at a slip road unseen by the lorry driver, who then pulls back across, quite properly, into the inside lane. In doing so, he clips the back of the car, spinning it around into the front of his truck. All accomplished within the driver's blind spots and all without the sort of impact which the driver of something weighing 44 tonnes might be expected to notice.