I think the important question here is "why?"
Why choose this form of locomotion over any other form?
Each type of movement is developed for a purpose, generally as a response to environment.
The lynx is on a chassis of flexible wheels because that is a simple way to go fast.
The tiger, dozer, and earthworker are on treads because they have to push or pull a great deal of weight, and need as much traction as possible even at the expense of speed.
Spiders and scorpions use legs to give them an advantage on rough terrain, at the cost of overall speed and durability.
What would be the advantages of a snail type of locomotion?
Try as I might I just can't think of any practical purpose for such a thing other than novelty, which is not a good reason. I just can't envision a situation in which it would be advantageous to move this way.
Hydraulic legs would give a similar advantage to treads, namely allowing the vehicle to dig its "feet" in and pull huge amounts of weight, but that is pretty small window of usefulness, and even then there are probably better vehicle designs for it.
In fact, I'm developing a sneaking suspicion that the only reason snails move the way they do is because they didn't evolve far enough to get any better equipment.
Always try to have at least some vision of how an idea will be a significant improvement over what already exists before voicing it. That goes for everywhere, not just this forum or the internet, but for life in general. People want to be able to immediately hear/see how their lives/situation could be made better by an idea you are proposing. It is not enough for the idea to be different, it also has to be something people would
want for some reason.