I have a 2011 Lexus CT and just this morning my car started surging and I'm not sure why. I was .25 miles from work and it started surging when it was idling and now every time I start the vehicle it is surging. It seems like it's running very rich as it smells like eggs in the engine compartment which usually comes from gas in the catalyst. All fluids are good, oil is on the low side of the acceptable range, I have 50 miles in a new tank of gas, and I'm just perplexed. I'm not sure if the car is able to be driven or what could be a cause or solution to this. Please let me out!