You're looking down on the real solar system, positioned for today. The glowing line is the gulf between Earth and Mars right now.
The efficient moments to leave — when Earth & Mars line up (≈ every 26 months). Pick an energy budget; the trip time you can achieve depends on each date's alignment (short near a window, far longer off it). Jump to one, then hit 🚀 Launch rocket:
Trip = the fastest transfer reachable within your energy budget on that date (it grows off-window; * = even the cheapest transfer exceeds the budget, so the best possible is shown). Δv = total heliocentric burn. Window dates are fixed by orbital alignment. Two-body estimate.