First off, the back of a pickup or van can be spanned with the quick squeeze of a lever and voila`, instant load stabilizer. No more worries of being pinned against the steering wheel or crushed behind buckets that reached maximum velocity because Granny, who couldn't see over the steering wheel of her 1970-something Chrysler, decided to lane share and you were forced to execute an untimely lock-up.
When you do reach the job only to find your helper/partner is previously occupied (insert excuse here), and discover there are still a few lids to hang, you can attach the bigFoot (a larger base that allows it to free-stand) to the bottom, a TopFoot (more of a footprint to hold up to 70#) to the top, and your 3rd Hand instantly becomes a helper with no annoying baggage attached. No Friday runs to the bank to help him cash his check, no trips to the store for formula because his baby's momma also has no car.