BOATS, CARS, AEROPLANES, RAILS AND FEET!
Transportation of people involves so many factors and unknowns. Do I get seasick? Is there an affordable air ticket? Does the bus stop near my office? Is there space for one more in the taxi?
This cache doesn't require any special form of transport to retrieve however you will need to solve the various forms of transport in the crossword. This will give you 10 different letters. Use these letters to solve the south and east transport types. (no letter is repeated in either co-ordinate)
S26 qr,stu
E28 vw,xyz

Easy enough! Just like calling a taxi, but where must the taxi go?
Use the equations below to find out where. Don’t forget to balance the equations.
i. The second last letter of the south co-ordinate word has the same value as the second last letter of east co-ordinate word
ii. Using the co-ordinate words determine:
3(q+s)+4(v-q)-s = (4s+8)/2 + (-4qs+4vs)/2s+q
iii. e = j
iv. 2c = 3a+i
v. e+d = h+j+3
vi. a+f = g+9
vii. c+i = d+f+3
viii. 3a-6 = i
ix. Noah's boat is equal to a baker's dozen
x. b = g+h

You can validate your puzzle solution with certitude.