Problem Statement

Today most of the transportation systems are based on non-renewable energy resources and also calls global warning, air pollution, noise pollution in addition requires a specific path to travel. The most of power wastes into to overcome the frictional force, drag force etc. Till now no vehicle used gravitational force to push it into forward direction, so that can add additional forward force to vehicle or acceleration.
Aircraft flies against the gravitational force, so most of lift force or fuel wastes in form of no travel path or consumed on to overcome the gravitational and drag forces (or component of lift force is not primarily responsible for travel time). On the other hand, railway has speed limit due to its away off problem from track (because of uneven upward lift generated in fast speed).
So, we need a transportation system that has capability to overcome the above limitations.

Solution statement

If we have a transportation system that looks like Aircraft cum Rail, then that will be solution for our problem or a car has wings (able to create reverse lift) mounted with electric propeller or jet engines (runs on renewable energy resources).
The back of vehicle may have arrangement for long rail to carry passengers like a Train.
Because of reverse lift the component of lift will be in downward direction.
Gravitational force proportional to weight, thrust, lift force (downward), and drag force are major forces.
System should have two vehicles in front (joined by a large link, link mounted on central point of wheel’s axle with the help of fulcrum) because if we have single vehicle in front, the gravitational and downward lift may not successfully convert into forward thrust.
Two components of forces in x and y directions are;
Fx=Thrust, Fy=Downward lift + gravitational force.
Resultant, R= ? (Ft^2+ (Fl+Fw)^2)
Where, Ft & Fl are variable.
Resultant angle, tan? =Fy/Fx. (So, depends on magnitude of Ft & Fl,Fw)
Caster distance depends on angle ? or inclination of resultant with horizontal axis and also on diameter of wheel.
We can use number of vehicles or engines on rail or on train, so that there will be more traction and speed.
Downward acceleration components increases because of Fl with speed.
Efficiency (overall) will be more because of added advantage of Fl(downward) and Fg.
Because of high tractive forces sharp turn corners, uphill and downhill (like Roller coaster) of track can be manage easily during travel.
When renewable source is electricity, there will be electric lines above the tracks.
Output will be more for same input because of Fl and Fg will add into Fx and also distance covered per unit time will be more.
Drag force affects as lift changes, so we have to choose specific angle that can provide maximum lift force with low drag.

More solution details are available in form drawings and explanation.
Please also find my other innovations.