Interesting, that this form-factor was popularized by DIY builders. First one was dutch-built, sponsored by Red Bull after prototyping stage, to film Verstappen's full F1 lap (so semi-DIY, so to say), but then record was taken back and forth between two DIY builders — Ben Biggs in Australia and Luke Maximo and his father
Latest record by Ben Biggs was 626kph (389mph). Latest record by Luke Maximo was 655kph (408mph).
> this form-factor
"It must be pointy".
The photo is so murky you only notice the shiny propeller cones.
You can only go so fast with propellers, as the propeller tips approach speed of sound and then life gets complicated.