Pretty sure that sign is one I've passed many times - on the highway 401 just coming out of Windsor, Ontario...
BTW at 150 over, you get your car impounded for 14 days (no matter who owns the car), an immediate 30 day license suspension, and a possible fine between $2k and $10k (not counting the 25% crime victim surcharge).
So the best value is actually 149 km/hr...😀