Suggestions for fluid drain rack design

I built a rack a few years back for a local wrecking yard to do the same thing. I used two lengths of 12 inch I beam for the wheels or hubs to sit in and welded 4 inch heavy wall sqaure tubing as legs and braces. I then fabbed up a sqaure pan to sit on the edges of the I beam to drain fluids into. The bottom of the pan had a fitting for a rubber hose to drain into a 45 gallon barrel. I forget what antifreeze was worth,but used oil went for 12 cents a liter. Then I had to repair the Cat loader and build a set of forks for it to move cars,but that is another story.

Hey burner any chance I could get the name of the yard so I could see if somebody would be willing to take a few pics for me. Right now I need to try and make it as automated as I can cause like lots you guys I'm a one man show and with the powers that be in DC I will most likely stay a believer in the "Kiss" method cause their is no way I'm going to be saddled with all the cost of hiring a guy over the table when I can do it myself. Heck who needs a private life anyway LOL