The best replacement for buggies is stealth.

The best alternatives to buggies are rated as following:
★★★★★  stealth
★★★  strollers
★★★  ruff and tuff
★★  pushchairs
★  go karts

Your alternative for buggies is not listed? Suggest!
Speaking about buggies, one probably shouldn't forget about buggy boards.

Other search terms related to buggies and their ratings are:
★★★★★ buggy boards
You have in mind a companion for buggies and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of buggies in all years. Click on graph for more.
buggies
stealth
strollers