What aerodynamic hazard should you expect when passing or being passed by a large semi-truck?

1. A strong blast of wind turbulence followed by a vacuum suction effect that can pull you toward the truck.
2. A sudden decrease in gravity that will lift your front tire off the ground.
3. A blast of static electricity that can disable your motorcycle's ignition.
4. A vacuum that will stall your engine due to a lack of air.