Does anyone remember those , i guess they were traction powered, $2 cars for kids that you push and a traction motor keeps it rolling? Ok heres the question - those cars that i am researching alsoshot sparks out of them. I believe they use to also have plastic guns that shot sparks out as well. Anyone know how they worked and possibly how they might be able to be incorporated ( the spark part ) on an HO train layout, possibly at a" downed wire" scenario or even a guy welding? Were ehese sparks dangerous? I know they seeme to be safe enough to hand out to litttle kids. Any info would be appreciated. Thanx