This helpful video by TWD98 shows almost all shortcuts that doesn't require mushrooms in Mario Kart 7.
However, some requires a lot of practice and courage, while some require certain kart parts, for example, Monster Tires will prevent losing too much speed while driving on inaccessible areas such as grass, sand for a short distance.
For me, I never knew that we could fly under the bridge in Neo Bowser City, and I never noticed that ramp in the lava in Bowser's Castle (New one, not the GBA one) before.
Hope this helps!
http://www.youtube.com/watch?v=0IcfLfNT9DY&feature=g-all&context=G2ec83feFAAAAAAAAEAA
However, some requires a lot of practice and courage, while some require certain kart parts, for example, Monster Tires will prevent losing too much speed while driving on inaccessible areas such as grass, sand for a short distance.
For me, I never knew that we could fly under the bridge in Neo Bowser City, and I never noticed that ramp in the lava in Bowser's Castle (New one, not the GBA one) before.
Hope this helps!
http://www.youtube.com/watch?v=0IcfLfNT9DY&feature=g-all&context=G2ec83feFAAAAAAAAEAA