Not support this.
1. If you use jeeps with blitz, you will be able to reach from Moscow to London (metaforic saying, dont get me seriously) and it would ruin games alot
2. If you combine jeeps with at's, there will be lots od contradictions like one player can get, for example with Italy, spain and rnw same turn
3. Why you need jeeps if you have at's
You can bring max 5 units with one at, but if you dont use all range of units you can even bring more units to each city with only one at.
4. You have those kind of unit at rp's and similiar games