Nobody wakes up to the sound of a car engine.
Why do you think the vast majority of van thefts take place at night ?
They may already be awake. Lots of properties near 9, Head Steet & Bamber's car.
But as said, you would drive & let yourself in with the key. After Nevill & June didn't bolt the door.
Cycling & getting in through the bathroom window would be 'too much pissing about' for you for 500k+.