>>>>BTW, did you know that ink-jet technology and airbags are about 30 years old?
>>>>
>>>>Alex
>>>
>>>I like it. Thanks :)
>>
>>And the wheel was invented when?
>
>Don't quote me on this, but after running your question through my positronic network, and without looking up a single fact, I can tell you for sure that it was PRIOR to the airbag for without the wheel we would have no use for airbags.

My sources of information may be obsolete and quirky, but wasn't the early model of airbag installed on the handheld shields for use in spear-to-spear combats? That means there may have been some airbags which didn't need wheels. OTOH, they could have been using wooden horses on wheels, which sounds rather ridiculous - but what do we really know about those times?