Pulse and Glide with the engine running?

[neverendz]

I'm talking about the VX here but other cars may apply.

If you were to pulse to 70mph, leave the engine running, car in fifth gear and glide down to 50mph, clutch engaged, the injectors will shut off during the glide with engine braking. Which would still be a fuel savings. The thing is that the car will slow down to 50 mph faster. But how much faster? Or how much of a distance difference?

I'm asking because I live in a congested area and pulse and glide is not an option.

I was wondering if someone may test this and let me know of the results?

Just curious. Seems like a safer, easier pulse and glide method.

Thanks.

, Bill