Fire car with obstacle avoidance

Hello
I´ve made a low level flight about the sketch and I ´ve found 16 times a call of the delay() function.

	Line 45:   delay(2000);     // wait for 2 secs
	Line 49: delay(100);
	Line 51: delay(100);
	Line 62: delay(40);
	Line 66: delay(100);
	Line 68: delay(300);
	Line 70: delay(200);
	Line 73: delay(300);
	Line 75: delay(300);
	Line 123:   delay(10);
	Line 131:   delay(10);
	Line 135:   delay(70);
	Line 147:   delay(2000);
	Line 150:   delay(100);
	Line 158:   delay(2000);
	Line 161:   delay(100);

The delay() function isn´t delaying it is stopping the processing.
Lay back and think about it.
Have nice day and enjoy coding in C++.