I have one but it was in the back of the car.
After working on the car for a month I knew everything would be 'dry' so I primed my solex with gas and started it ...back fire caused a fire on the right carbs. The nearest extinguisher was a powder type ... which I grabbed and dumped on the fire - flames up around and over the engine lid
I forgot about the Element in my panic
Lesson 1 - I should have had the Element to hand, caps off and not in the car.
Lesson 2 - Powder makes a HUGE mess - engine is now out and I had to hose everything down - that sh** gets everywhere but it saved the car (and probably my house)
Lesson 3 - Priming Solex's - use a measured amount, funnel and BE CAREFUL - I didn't and wasn't - I spilt some gas which was my fault and my down fall, (and it didn't help that the fuel line banjo nut was not tightened so I was feeding fresh gas into the fire as the engine ran.
Lesson 4 - "Fiddling" with fuel issues - never assume you won't have a fire. I have never had issues before but this time I was lucky. Minor wire singe repair, carbon/smoke damage to clean off engine lid, carbs to rebuild and all engine tin off to clean the nooks and crannies and ... clean underwear required.
Last issue - I have never started and used an Element - but pulling a trigger on the extinguisher was instant which meant I could hit the fire before it got 'hot', would an Element have been as quick ?