During one of my travels, I was thinking about the difficulty of handling the baggage in the road and railway stations. Yes it is true that a trolley is kind of attachment to the bag is helping us. But when we go to in a rough road it will be difficult or even sometimes we may have to carry it by hand especially when we climb the steps in a typical railway station. So thought about an idea of making a trolley cum step climber equipment. Not as complex as a robot, just two mechanisms. a trolley with a step climber. OfCourse it should be ecconical to affordable to a normal travellor who wishes to buy a suitcase/trolley.

One of my friends, Manju, recently invited my attention to this site; I found the 'real' research happening to make a 'dog' ! Yes... there is a big dog is already there.. the video is also available...
Follow this link:
http://www.bostondynamics.com/content/sec.php?section=BigDog
For those who are lazy to click and read the content, I am pasting few copyrighted material here from the site….

BigDog - The Most Advanced Quadruped Robot
on Earth
BigDog is the alpha male of the Boston Dynamics family of
robots. It is a quadruped robot that walks, runs, and climbs on rough terrain
and carries heavy loads. BigDog is powered by a gasoline engine that drives a
hydraulic actuation system. BigDog's legs are articulated like an animal’s, and
have compliant elements that absorb shock and recycle energy from one step to
the next. BigDog is the size of a large dog or small mule, measuring 1 meter
long, 0.7 meters tall and 75 kg weight.