Anyone who's ever watched a science fiction movie knows, when the mayor bursts into the lab and demands results right now because the Governor is on the line, something Bad is going to happen in the lab.
Luckily for us, despite the clamoring of the world for a COVID-19 vaccine, there are many layers of good science protecting us from something being rushed to market before it's been adequately tested.
But a vaccine will still take time, and while scientists continue testing, there is more than enough to do just getting the logistics coordinated to roll out a shot for everyone in the world.