Unfortunately they don’t “all have handbrakes”. Increasingly, they have electric parking brakes, some of which work better than handbrakes and some of which don’t. Red rage is nothing to do with left-foot braking either. It’s from leaving automatic cars in D with either foot on the brake. Try pulling on a handbrake and it may not be strong enough. Try using an electric parking brake and it might not release. Try moving the lever from D to N on any VAG car and you have to brake to get back into D, then that sends a message to the ECU cutting power. So manufacturers have encouraged this sloppy driving habit that blinds the driver behind.