Eating a sandwich and drinking a coffee while driving are dramatically different. A coffee sip takes a second, you can almost certainly keep your eyes on the road the whole time, and you can easily put it down in a cupholder, freeing your second hand. A sandwich involves 4 layers of wrapping, possible sauce drippings, and a different surface to each bite that requires you to look. I’ve read studies that found that actively eating is as risky as being drunk behind the wheel.
Those are all more affordable, reliable, and established brands though.