The antonyms for the phrase "go on foot" include a range of alternative modes of transportation. These may include driving, biking, riding in a car or bus, or even flying. While going on foot is often seen as a healthy and environmentally friendly option, there are many situations in which it may not be practical or feasible. For example, when traveling long distances, carrying heavy objects, or navigating difficult terrain, other modes of transportation may be more efficient and effective. Ultimately, the choice of how to travel depends on factors such as convenience, safety, and personal preference.