Sorry but a garage is living breathing thing, you CAN'T use software to design where to put your tools, you can use software to design the garage building itself but not the tools.
In a real garage things move:
What is a good location for that table saw this year will be a great a location for a welder next year.
What looks on paper to be a perfect place for that grinder will be wrong the first time something slips out of your hand and is thrown by the grinder into the windshield way over there.
And that workbench is right in the draft area when the doors are open, while that might be nice in the summer its a ***** in the winter.
Wow the lift was really nice on the left side of the garage when I moved in, but I prefer to put the metal lathe over there next to the compressor and have a "dirty" area so the lift now has to be over there.
As you work on cars, things move, this week its motor work and what you really need is the workbench here, next week is body work and the welder is more important than the workbench, for me right now, its the woodworking tools that are more important as I am doing the woodwork on the body. Get everything into the garage and see where they "naturally" end up based on your type of work and work habits, you will be happier. And don't be afraid to move and reorganize things sometimes, you will get more done. Its not a house where the couch and tv go "there" for life, its way more interesting than a house and its alive. If you insist on drawing it up...sketchup.
