LOL. I love the 4' hose idea... with some kind of helmet attachment. No, this is not for cruising & drinking at the same time.
What happens when you go to lunch with your buddy & you refill your cup as you head out the door? If you don't have a trunk, or one of those cardboard carriers, or your trunk is already full... you'll have to throw the cup away I guess.
I was early to work one morning so I stopped to get a biscuit & coffee. As I walked out the door & was trying to figure out where I was going to put the coffee. I was a small cup & only half full so I put it in the storage area in the steering column. It splashed out a little & I had to clean it up.
That particular Friday day I stopped & got the drink for my wife. I had a sip at a stop light, but as you can see, 90% of the beverage made it home.
Today I stopped at 7-11 & got a vitamin water. I didn't drink it between the store & my office, but at least I had a place to keep it until I got back to work.
But I think your point is this: Safety first... & that, my friend, is a very good point indeed.
On a side note, this is what I got when I Googled "Tim Horton c" by accident: