You should have no problem. Most people want to glaze over the asphalt but you want to hide it. Kudos!

Here is a link that might be useful: Propagating Perennials

My first thought is that you might have to break up the asphalt first in some way to allow the water to drain through. Otherwise, wouldn't rain water drain through the pavers and likely start washing the sand out as it drains off the impervious driveway underneath?

Thanks for your comments. The rise of the driveway doesn't impact drainage with exception of the connection to the garage. In that location I was going to break up the driveway and grade it with a drain running in front of the garage for runnoff mediation. Otherwise no impact on structures. I hadn't thought about the surface drainage as an issue until now. Thanks for pointing that out.

1.5-2" of sand is way too much.

also, the stability of a paver installation rests on the quality of the base. maybe your driveway installation was top-notch, maybe not. I know many of the driveways I've ripped up have only had an inch or two of base; when we started working on our house after moving in, we discovered that our driveway was 1.5" of asphalt poured on dirt.

If you're planning on that much sand with the intention of using it to level out any wheel ruts or settlement areas in the asphalt, it won't work. Those areas are there because the base is inadequate, and those inadequacies WILL telegraph their way to the surface.

And, what woodyoak & rhodium said.

What depth of sand do you recommend?

The driveway seems rather well done. It's in good shape. I'll know more of course what the underpinnings are when I pull up the apron around the garage but if it's based on the 8" thick pour of concrete for my sidewalk that I pulled up I'm going to like what I find. I didn't love the concrete being that thick but hopefully I'll get at least that for the driveway. No ruts in the driveway at all.

Thanks again. You've been very helpful.

On this subject of paver over asphalt driveway. Many of yawl was concern about drainage, so would it be good to put a crush run on the asphalt, then put sand base for better drainage. Thank you yawl. please someone email me back at Tedanko@gmail.com.