[Secret Agent Man]

Now let’s see them slow it down once it’s going.

[The Antiyuppie]

“Now let’s see them slow it down once it’s going.”

True, but any “free fuel” you don’t have to carry is a Good Thing. With a nuclear powered ion rocket engine, solar pressure going away from the sun and using the rocket to come back would be viable. Slow to accelerate and decelerate, but doable especially on an unmanned flight.