No. Not possible.

The disparity in the number of chromosomes is large enough that I doubt you could produce a viable offspring. Cattle have 60 chromosomes, horses have 64. While it is true horses and donkeys have different numbers of chromosomes, Donkeys have 62, they can produce viable offspring, but the offspring cannot reproduce. Also the differences between them, digestive tract and foot structure, are such that an intermediate form is probably not practicle.

whats with the strange questions?

I don't know, but at least you could milk your transportation.

But, seriously, you can't mate them naturally, but of course you can with genetic manipulation in a petri dish. They even put jellyfish DNA slice bits in rabbits, to make them glow in the dark.

far too different genetically, the closest would be manipulating soem of the geens in one and splice it into the other, ie we have goats that produce spider silk proteins in their milk, bacteria that produce insulin.