I think we're all missing a very important advantage we should be taking.
First off, how many imagination ingots do we have on us at the moment? Knowing Marc as I think I do, he's a very resourceful motherforgeter (proved by having a gas tank just in case), so we might have some already.
What I can gather from what's been presented is that the Beatles too have the powers of dimension jumping with their yellow submarine.
If they're trying to get to the Tea Party, and we're trying to get to the Tea Party, we only have one choice.
Use any remaining ingots or harvest them from something around to create three things:
The interstellar rope, the quantum hook, and the STEVE.
Using the rope and hook and secure the two demension jumping vehicals together. The rope and hook are then hooked to the STEVE (Sub-demnsional Transportation Engine and Vortex Entanglement).
When the three items are combined they create simple logic relay circuit between the Marc-mobile's Nine-Chevron style navigation computer to the Yellow Submarine's magical mystery computer allowing for each transporter's precise X, Y, and Z subspace coordinates to be transmitted to each other through a basic signal. Also, it should as well be able to calculate and account for all possible fractured time-lines and any opposing gravitational fields caused by the massive amount of pull each ship would create during particularization; when they're solidified again, they'll never be further apart than within a few centimeters of one another. Of course the chances of the hull and Marc's roof becoming molecular bonds as one solid object during reentry is possible, the likelihood is slim and the STEVE should be able to calculate around it.
In lamens terms, get three ingots and turn them into the three items above in order to tie they ships together so you can travel with one another.
