u know when the tyre got punctured i was actually thinking about inflation device that @jz was selling but then i thought what would be its use when its punctured but you are right, fill up air go to shop n let them take the headache 
but wouldnt work if u r on motorway
the tyre shop was hardly at a distance of 500 meters but air was completely out so had to change tyre myself
gotta get that tyre device now 
already i keep hearing sound of wheel lock all the time from trunk
around an year ago i did tried using the simple jack for rear tyre but well i didnt had any idea n i couldnt lift the car, luckily driver was with me so he changed it
a little work out is good but it feels like alot of workout, car may not be heavy but there's a 55l cng cylinder at rear as well to lift
btw this hydraulic jack cant be used with this car? atleast at that point it was useless, maybe from back side it may have lifted but with that so small rod what can be done :S