Very rarely have I seen a single idea so perfectly illustrated. Impeccable timing and presentation. Unexpected, every step of the way. Kudos.
As portrayed, it seems like it only takes a minute or so to get to Mars at 20% of the speed of light. But really, they continue speeding up the starfield to multiples of superluminal speeds. As great as that distance seems, it's even more than an order of magnitude larger than depicted.