Waking someone early can cause them tiredness, sleepiness and feeling unproductive the rest of the day, especially if on a daily basis. They might need extra sleep during the day just to try to cope.
Your brother-in-law is asked to sacrifice only a minute of his time by considerately parking his car on the street and walking down a driveway.
Maybe your neighbour should change their entire lifestyle to accommodate your brother-in-law by sleeping earlier, or shifting their bed to another room? Maybe they should install expensive noise insulation in their interiors? Then your brother-in-law won't have to go to the Herculean effort of walking down a driveway.
Who's being ridiculous?