The Blood-Mobile - a random YouTube video.
And I only got to 4 reloads before finding this.
No, it's not a refrigerated van, it's not a mechanical-vampire either; it's human-biology. An all in-one-vague "this how things work kids, but the most important part of your body is all the "traffic". (No mention of traffic-congestion, but that's probably a different film)
I don't know what deranged person thought of the idea, but I guess they laughed like I did.
(Ten more and I was finding a 1 tonne bulk-bag of grass that had previously passed through the digestive-system of a male bovine) Man, surely people would press the button?