Soldato
If that's the case it was nice of the driver to bail out and leave the passenger to their fate (probably locked in if they hadn't paid yet...)Seeing the pictures I would heavily speculate it's more likely to be something like a leaky LPG tank combusting or potentially, as Jokester mentioned, a failed "fizzle" (I think that's unlikely TBH) as there is none of the "compression" of the cars bodyshell that you'd expect from any kind of explosive (high or low) which makes me think some form of flammable gas combustion.
My guess would be the LPG thing though, there's plenty of Russian dashcams of LPG tanks "exploding" for reference.