My 2017 Spark doesn't have a steering wheel lock. It's a CVT though and can't be towed 4-down so I towed it on a trailer.
Be careful with the information that you might get from the dealer or from GM though. When I bought mine last March the dealer showed me the GM training material he had that indicated both CVT and manual could be towed 4-down. He even offered to put the tow bar on the front at no additional charge if I bought from him. I checked the owner's manual though and showed him where it indicated the CVT couldn't be towed 4-down. He got with the factory and verified that they had misrepresented this in their training materials.
BTW, overall it's a great little car. Drives a bit like a sports car, is nice and quiet and gets great MPG, especially when you can get non-ethonal gas. So quiet in fact that there's almost no noticeable change in wind noise between 20 and 90 mph - at least on good new pavement! Towed my on a trailer to Alaska last summer and from there we did a road trip over the Top of the World highway down to Skagway and back to the Kenai. A few week later I drove it back down the Alcan to Texas. Was getting 46+ MPG on non-ethonal gas in Alaska but it's down to around 41 MPG here in Texas.