Will T20 cricket over rule test?

Will T20 overcome test. Will there be a mix? Test cricket is so old school now and the tickets are not selling that good. What will they do? I mean test cricket is only for adults or people who are really deep in cricket. Both which are really rare. T20 on the other hand is booming with business. With all the games sold out. As you can see T20 is much more popular. I think the best idea is to mix test and t20 where the first innings is 10 overs, then the first innings of the opposing team, and back to 2nd innings the of team 1 which is 10 overs and the 2nd innings of the second team which is 10 overs. Which has more with all the rules as test cricket such as follow ons and super wides. So now there will be even more of a demand for test and t20.