Each of the phrases in bold is incorrect. rewrite them correctly.
1 if technology will continue to improve, we'll all have flying cars.
2 if we all will have flying cars, there won't be any cars on the roads.
3 if there won't be any cars on the roads, there won't be any traffic.
4 if there won't be any traffic, it will be quicker to go by car.
5 if it will be quicker to go by car, i will stop using my flying car! ​

1. If technology continues to improve, we will all have flying cars.
Explanation: In conditional sentences, the use of the present simple (continues) is correct in the "if" clause to indicate a general truth or a possible future condition. The correct form of the future simple (will have) is used in the main clause to indicate the result of the condition being fulfilled.

2. If we all have flying cars, there won't be any cars on the roads.
Explanation: "if" is used to introduce a conditional clause. The correct form of the future simple (will) is used in the main clause to indicate the result of the condition being fulfilled. The placement of "will" should not be before the subject (we).

3. If there aren't any cars on the roads, there won't be any traffic.
Explanation: The negative form of "will not" is "won't". The present simple tense (are not) is used in the "if" clause to indicate a current or future condition. The correct form of the future simple (will) is used in the main clause to indicate the result of the condition being fulfilled.

4. If there isn't any traffic, it will be quicker to go by car.
Explanation: The negative form of "will not" is "won't". The present simple tense (is not) is used in the "if" clause to indicate a current or future condition. The correct form of the future simple (will) is used in the main clause to indicate the result of the condition being fulfilled.

5. If it is quicker to go by car, I will stop using my flying car!
Explanation: The present simple tense (is) is used in the "if" clause to indicate a current or future condition. The correct form of the future simple (will) is used in the main clause to indicate the result of the condition being fulfilled. The pronoun "I" should be written in uppercase as it is a personal pronoun and should always be capitalized in English.